Processing of the Heat Resistant Bearing Steel M50NiL by Selective Laser Melting
Processing of the Heat Resistant Bearing Steel M50NiL by Selective Laser Melting
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DOI：
10.3139/105.110358
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发表时间：
2018-08-01
影响因子：
0.6
通讯作者：
Schmidt, M.
中科院分区：
文献类型：
--
作者：
Beer, O.;Merklein, C.;Schmidt, M.
由于打印技术和打印机可用性的改进，增材制造 (AM) 方法变得越来越重要。由于增材制造仍然是一项非常昂贵的技术，因此它主要用于航空航天或医疗应用中的复杂零件。特别是在这种要求苛刻的应用中，零件的性能非常重要。以通常用于航空发动机主轴轴承的渗碳耐热钢 M50NiL 为例，展示了增材制造工艺的发展以及增材制造加工零件的性能。通过与传统 M50NiL 制造的样本进行比较，结果表明，通过光学显微镜、硬度测试、拉伸测试和滚动接触疲劳测试确定的 M50NiL AM 和传统制造的 M50NiL 的性能具有可比性。
Additive manufacturing (AM) methods become more and more important due to improvements in the printing technology and availability of printers. As additive manufacturing is still a very expensive technology, it is predominantly used for complex parts in aerospace or medical applications. Especially in such demanding applications the properties of the parts are very important. In case of M50NiL, a carburizing heat resistant steel typically used for mainshaft bearings in aero engines, the development of an AM process and the properties of AM processed parts are shown. By comparison with specimens manufactured from conventional M50NiL it is demonstrated, that properties determined by optical microscopy, hardness testing, tensile testing, and rolling contact fatigue testing of M50NiL AM and M50NiL conventional manufactured are comparable.